diff --git a/src/DIRAC/Interfaces/API/Job.py b/src/DIRAC/Interfaces/API/Job.py
index 15deda4cd9f..8ed86722362 100755
--- a/src/DIRAC/Interfaces/API/Job.py
+++ b/src/DIRAC/Interfaces/API/Job.py
@@ -49,6 +49,8 @@
 
 
 class BadJobParameterError(ValueError):
+    """Exception to indicate a bad job parameter name."""
+
     pass